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Thread: Q6600 + EP45-DS3 Overclocking




  1. #1
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    Unhappy Q6600 + EP45-DS3 Overclocking

    Need help overclocking this q6600. I was aiming for 3.6ghz but Im not so sure its possible now. Ive read a lot about other people's settings and recommendations on here, but I cant get 3.6ghz stable without insane vcore of 1.6+ in bios (which is about 1.56 idle and 1.46 load). This board has insane vdroop as well which is really limiting, if there is a way to reduce or even stop the vdroop that would be great.

    Anyway I am at 3.4ghz at the moment with the settings below. It is currently IBT stable, I ran over 10 runs of IBT and still stable. Max core temperature was 74C during this. I am using a corsair H50 with an Akasa viper.

    CPU = Intel Core2 Q6600 G0 (coretemp VID shows 1.3250 :( )
    Motherboard = EP45-DS3
    BIOS Version = F10d
    Ram = OCZ PC2-6400 Reaper 2x2gb rated 4-4-3-15 2.1V

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Turbo
    CPU Clock Ratio ..........................: 9x
    Fine CPU Clock Ratio.....................:. ?? dont remember having this
    CPU Frequency ...........................: 3.4
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 378 Mhz
    PCI Express Frequency (Mhz) .........: 100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<< 0
    MCH Clock Skew (ps)...................: <<< 0
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Enabled (tried disabled and it made things worse)
    (G)MCH Frequency Latch...............: 333
    System Memory Multiplier ..............: 2.0D (I think)
    Memory Frequency (Mhz) ..............: 756
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................ 4
    tRCD ......................................... 4
    tRP'........................................... 3 
    tRAS.......................................... 15
    
    Set all Suggested below to highest Values first.  Then later you can lower, one at a time, testing as you go
    
    Advanced Timing Control
    tRRD........................................... Auto
    tWTR.......................................... Auto
    tWR............................................ Auto
    tRFC........................................... Auto
    tRTP........................................... Auto
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................ Auto
    
    Channel A
    Static tRead Value.........................:8
     tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
     tRD Phase2 Adjustment .................:Auto
     tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto 
    Twr2wr(Different Rank)...................:Auto 
    Twr2rd(Different Rank)...................:Auto 
    Trd2wr(Same/Diff Rank)..................:Auto 
    Dimm1 Clock Skew Control...............:Auto  ps
    Dimm2 Clock Skew Control...............:Auto  ps
    
    Channel B
    Static tRead Value.........................:8
     tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
     tRD Phase2 Adjustment .................:Auto
     tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto 
    Twr2wr(Different Rank)...................:Auto 
    Twr2rd(Different Rank)...................:Auto 
    Trd2wr(Same/Diff Rank)..................:Auto 
    Dimm1 Clock Skew Control...............:Auto  ps
    Dimm2 Clock Skew Control...............:Auto  ps
    
    Motherboard Voltage Control
    
    CPU
    CPU Vcore….……….........................:1.5000
    
    CPU Termination…..... 1.200V*.......: 1.2 (tried 1.3 and didnt make a difference, any suggestions?)
    
    CPU PLL…………………....1.500V*.......: 1.5 ( tried 1.57, didnt make a difference)
    
    CPU Referen.…………....0.755V*.......: Auto
    
    CPU Reference2………,,0.800V*.......: I dont have this
    
    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.24 (needed 1.26 to boot into windows at 400fsb)
    MCH Reference….…….0.760V...........; <<< Auto
    MCH/DRAM Ref.…......0.900V...........: <<< Auto
    ICH I/O……………….....1.500V............: <<< 1.5 (tried 1.57, didnt make difference)
    ICH Core…………...……1.100V............: <<< Dont have this!!
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.12 (shows 2.1 dram voltage in bios health screen)
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave
    
    Advanced Settings
    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Disabled]
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled] dont have this
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Disabled] Enabled if you use Vmware/Virtual PC
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[ENABLED] - does putting this disabled really make a difference?
    I just dont understand termination, PLL and the MCH and ICH voltages. It seems whatever I try it makes no difference. Just before posting this I tried 1.48750 vcore, it failed IBT, then I kept that vcore and put vtt to 1.3, and it passed IBT. Then I decided to try see how much lower vcore can go, dropped one notch, it failed. Went back to 1.48750, it failed too! And I kept testing each notch until I got to 1.5 which is what I had with vtt 1.2!

    Any help with this would be greatly appreciated.

    Thanks

  2. #2
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    Default Re: Q6600 + EP45-DS3 Overclocking

    Static tRead is the timing of MCH core, goes down with voltage, this board doesn't work well with tRD 8 and Cas 4 for some reason, my dram used to run 4-4-4 on P31 board. Change to 9 and 5, disable XMP.

    Q is very power hungry, don't go 1.5V. how many watts in everest that? you'll fry the mosfets, they are naked there, because the water cooling they get even less air.

    load optimised, ratio 8x, host 400, dram 2.0D and 5-5-5 would be best.
    i'd try all voltages to 'normal', dram too.
    then MCH, Termination, CPU, PLL, Dram upped by -+10% max to see if it helps.

    the voltmod
    http://img32.imageshack.us/img32/699...roopingmod.jpg

    Variant 2: load optim
    Ratio 9x
    Host 370-390
    System Memory 2.50A
    Staic Tread 8
    MCH Core 1.2V
    Dram 2.0V
    CPU Voltage as needed
    Last edited by yuu; 06-14-2010 at 04:36 PM.

  3. #3
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Q6600 + EP45-DS3 Overclocking

    Some Q6600 wont do 3.6 without a ton of voltage, I can say you may not be using enough Vtt though, try 1.35-1.46 Vtt and you might have better luck.

    Set MCH latch to Auto, and then choose Multi's based on your FSB (B for 333-400 and D for 400+)

    So use 2.00B and try tRD 8-9, 8 should be ok at that FSB, try setting your driving strength profiles for each channel to 1066

  4. #4
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    Default Re: Q6600 + EP45-DS3 Overclocking

    If I cant get 3.6 stable Im happy with 3.4 but the thing that is really annoying me is the vdroop. At load 3.4 is stable at really good volts but to get that I have to put hte vcore almost 0.8v above that, and so at idle it just sits there at this high voltage and idle temps are a bit on the high side (after loading the cpu for a few minutes the idle temp is 42+).

    I think the airflow in my case needs some work to exhaust the hot air, going to try mod a blow hole at the top.

    But if I could get that vcore down by upping vtt it would be great.

    Going to try your settings tonight and see how it goes. Would a vtt of 1.46 be acceptable?

    Also, if I ran 400 x 8 which is 3.2 ghz is that better than what I am currently at with 3.4 ghz?

  5. #5
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    Default Re: Q6600 + EP45-DS3 Overclocking

    You can try changing the VTT using the EasyTune6, while Intelburn is running on 200-500MB memory size for a big number of 1000 loops too keep it going long enough so that every 5 seconds a result is shown on IBT until you finish. Use ET6 to change the voltages +-0.02 V increments in the +-0.1V limit. Any need of voltage will manifets itself pretty fast if you wait 5or so loops to pass succesfully on the IBT screen, then apply the -0.02 or +0.02V on any of the Voltages.

    I skipped the small 0.02V stepps and applied directly the TerminationVTT 1.1V, PLL 1.1V, MCH Core 1.1V while 500Mhz FSB, and it didn't show in any way needing more Vcore, this with C2D 65nm and 45nm, not Q. It just worked.

  6. #6
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    Default Re: Q6600 + EP45-DS3 Overclocking

    OK, I just did the pencil vmod and it worked!, have been applying a graphite pencil on that resistor there for 5 minutes, then blow away the remaing graphite debris that formed around the area, now the resistor has a new shiny graphite coating.

    The result is 1.25 set in bios.

    before 1.180 V load, 1.218 V idle
    after 1.209 V load, 1.222 V idle

    The idea is that gigabyte didn't inlcude the Load-line option in BIOS and in hardware, despite that the PWM controller supports it, and we users had to do something. it is either that vmod or a new board for this already obsoleted socket 775, and yet another socket 1155 is coming next year, no way. Things move fast.
    Last edited by yuu; 06-15-2010 at 01:47 PM.

  7. #7
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    Default Re: Q6600 + EP45-DS3 Overclocking

    Nice one Yuu, I didnt think the pencil mod would work but I will give that a try tomorrow now that it has worked for you. I read the drop in resistance required cant be accomplised by a pencil, only by soldering!

    But even that improvement you have is worth 5 minutes! I did a pencil mod on my older P5N-E SLI and it worked wonders.

    Just a question though, have you noticed any other voltages changing?

  8. #8
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    Default Re: Q6600 + EP45-DS3 Overclocking

    You probably read the original thread It vdroop / vdrop mod for Gigabyte GA-EP45-DS3R? - XtremeSystems Forums
    there is a bigger photo in post #10 and #20

    It only affects the CPU Voltage, since it is the CPU PWM pin, i haven't measured the other voltages.

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Q6600 + EP45-DS3 Overclocking

    Vtt may not need to be 1.46 for 3.4Ghz, but if you need it then it will be ok, but do try lower.

    Pencil mod works if you do it enough and with a proper pencil

  10. #10
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    Default Re: Q6600 + EP45-DS3 Overclocking

    I think vdroop is preventing me achieving the full potential of this chip.

    I need to put 1.52+ idle vcore so that at load the vcore is 1.44-1.42. 3.6ghz is stable at this but the temperatures are a bit too much for my liking, especially idle temps.

    vdroop is the most ridiculous thing ever invented! Why on earth Gigabyte didnt include Load line calibration is just stupid.

    Im going to do the vdroop mod probably tomorrow. I have done this before on another board and for that board I actually bought silver 'ink' to use. Can I use this? Or stick to pencil?

    If it messes up Im going to ditch this board and get a board with proper options. I swear this board I have has no effect no matter what vtt I put it is as if it does nothing. Whats the best board to overclock a q6600? I dont need SLI/crossfire...

    Cheers

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